Pill-injector.



J. KOZMOUSKY. PILL INJEGTOR. APPLIOATION TILED MAR; s. 1913 1,109,072, Patented Sept.1,1914.

THE AORRIS PETERS co. PHOTD-LITHOU WASHINGTON. u c.

JOHN KOZMOUSKY, orlisos'ron, ivmss ioiiusnrrs.

Specificationofietters Patent. Application filed March 8, 19 1s. Serial No. 752,955.

LL-INJECTO Patented Sept. 1, 1914.

1/ 0 all tvhom it may concern: I

Be it known that 1, JOHN KozMoUs Y, a citizen'of the United States, and resident of Boston, in the county ofSuffolk and Statev of h Iassachusetts,.have inventedlcertain new and useful Improvements in Pill-Injectors, of which the following is a specification.

This invention relates to means for injecting small pills or pellets into the tissues of animals for curative purposes, and has for its object to provide a compact and efficient injector for the purposestated, adaptedtohold a charge of pills and to inject the same, one at a time, until the charge is exhausted. i

The invention consists in the improve ments which I will now. proceed to describe andclaim; Of the accompanylng jecti-ng operation; Fig. 3 represents an end view of the injector showing the pivoted head displaced; Fig. d -represents a section on; line 4-4 of Fig. ;2.;fF ig. 5 represents a section online 5-,5 ofF1gy2; and;.F1g;- 6

represents an enlarged perspective view of the operating member hereinafter referred to,

Similar reference characters indicate the same or similar parts 1n all the figures.

1 3 represents a tubular. casing which is preferably elliptical in cross section and formed to be held by the operators hand.

14 represents a head which covers one end :of the casing and is mounted to swing on a pivot15 engaged-with ablock or partition 16 within the casing. sight opening 14 in which is fitted a transparent filling 14 of celluloid'orf-jother suitable material which permits an inspection of a rotary pill feeder 20 adapted to contain a charge of pills or pelletsfl'lS, said pills being contained in 'pockets'19' in the rotary pill feeder. Said feeder, as iheres'hown, is a disk mounted to rotate on a stud .21 aifixed to the block 16, the pill pockets 19 being a circular series oforifices formed in the disk. The casing 13 has a fixed cap 13 having an orifice into which the outer. ortion of the pill feeder projects, said ori ce closely fit site walls of a drawings which form a part of this specification: Figure 1' represents a side'elevation partly broken: away of a pill injector embodying my invention; Fig. 2 represents a longitudinal'sec tion of a portion of the same showing the- .relative positions of the parts" before the in- The'head 14 has a' parent filling: 1r covers the outer side of the feeder 20,- and the inner side of theufeeder bears on the block 16, so that the pellets are confined in the pockets by said filling 14; and block 16, these parts constituting oppo-I pill chamber. E l

ting the periphery of the feeders The transv The head lt is provided with'an angular arm 22 which partially-overhangs-the sight opening and is-apertured to receive 'a pointed tubular needle 23 adapted to penetrate the tissues into which the pills are'to be inj eoted, the inner endof the needle being in close proximity to the filling 14: which has an orifice 14 coinciding with the needle and. constituting a is aneXtension.

' The'block 16 is pill outlet of which theneedle provided with a central i orifice 24 constituting a guide for a Splungerfi 25,:said vguide being in alin'ementwiththe pill outlet. The axis of the feeder 20 is at one side of'the path of the plunger 25, the

arrangement being such that'a step-by-step rotation of the feeder. bringsthe pockets. therein successivelyuinto the path of the plunger. WVhen the plunger is projected it passesthrough the pocket in alinement with it into the outlet l4: and needle 23, and forces I a pill through saidwneedle. The. plunger is aflixed' to ahead'26, which is move able in thecasing 13,.and is normally pro- I jected by means of aspring 27 seated on the closed inner end 28 of the casing.

3 The block 16 is utilized as a support and I guide for an operating member which in eludes a detent 29 adapted to hold the plunger in a retracted position, and a pawl 30, adaptedgto-inipart a partial rotation ,to'the feeder 20,;the latter being provided with ratchet teeth 31-on its periphery. The detent 29 is an arm affixed to a slide 32 which is movable in'a guiding cavity 33 in the block 16, said slide being provided with a stem 34 projecting through the wall of the casingwand having a head 36 at' its outer convenience hereinafter referredto as a push piece and being normally retracted by means of a spring 37. The detentarm29 is fitted to slide in a guide 38, in the block '16, and has a key-hole shaped slot 39 through Which the plunger passes. When thepushpiece end, the saidblook, stem andhead being for 2 is retracted, the narrow end of'theslot 39- engages a shoulder 40 on the plunger, said} shoulder being formed by -cutting a periph with a longitudinal slot 52 eral groove in the plunger. 7 The detent when in this position therefore engages the plunger and holds it retracted. The larger end of the slot 39 is formedto permit the plunger to pass freely through it when thedetent arm is projected. The pawl 30 is pivoted at 4:1 to the slide 32, and is pressed by'a spring 42 against the ratcheted periphcry of the feeder 20.

It will now be seen that when the operating member or push piece is pushed inwardly, the pawl 30 is c-ausedto impart a partialrotation to the pill feeder, bringing a pocket and a pill therein into alinement with the plunger and pill outlet, and that the detent arm is at the same time moved to bring the larger end of its slot 39 into alinement with the plunger, the arrangement being such that the plunger is released innnediately after the completion of thepartial rotation of the feeder. Provision is thus made for first feeding a pillto position to be ejected, and for then releasing the plunger. The guide 88, in which the detent arm moves, is formed to support the arm laterally against the pressure of the springpressed plunger against it. Accidental backby' a spring stop pawl .43. 7 Owing to the fact that the head 1tformward movement of the: feeder is prevented ing the outer side of, the pill chamber is pill chamber may be readily pivoted, the

opened. to permit insertion of the charge of pills. The-head is retained in its operative 7 position by a locking bolt 44: adapted to enfor an orifice a5 in'th'e block 16. Said bolt is carried by an arm't'G hinged at 47 to the headla. A spring pressed-detent48, movable in the block 16, enters a notch in the bolt-i4 to lock thelatter, the detent being movable sidewise and provided with a head 48 by which it may be displaced to release the bolt.

hen the head 14 is displaced, the pills may be dropped into the pockets 19, and when the head is replaced the transparent filling--14 retains the pills in the pockets and permits an inspection of the same.

51 represents a handle attached to the head 26 to enable the plunger to be conveniently retracted. The casing is provided in which the handle 51 is movable.

I claim:

I. A pill injector comprising a casing having a pill chamber, a pill outlet and a plunger guide, said outlet and guide being in alinement with each other, a spring projected plunger movable in the guide and outlet, amovable detent adapted to hold the plunger retracted, a pill feeder movable in said chamber and having a series of pill pockets which are movable successively into tlr'epath of the plunger, and means for successively moving the feeder to bring one of ger and having a concentric series of pill,

pockets and a peripheral series of ratchet teeth, and a movable operating member hav' ing a detent which normally engages the plungerto hold it retracted,and a pawl engaged with the ratcheted periphery of the feeder, and adapted to rotate the latter step-by-step, the arrangement of said pawl and detent being such that a movement of the operating member successively moves the feeder and releases the plunger.

3;.A pill injector comprising a casing having a pill chamber, a pill outlet and a plunger-guide, said outlet and-guide being in alinement with each other, a spring projected plunger movable in the guide and outlet, a rotary pill feeder journaled in the chamber at one side of the path of the plun- 'ger and having a concentric series of pill 1 pockets and a peripheral series of ratchet teeth, and a spring-pressed push piece hava keyhole 1 shaped slot through which theplunger passes, the narrower portion of said slot constituting a detent engaging a groove in the plunger, and a pawl pivoted to the push piece and held in yielding engagement with the r'atcheted periphery of the feeder, the spring controlling the push piece normally holding the detent in engagement with theplunger, and the pawl in a retracted position. a

4. A pill injector comprising a "casing having a fixed block or partition forming the inner side of a pillchamber, a head pivoted to the. casing and forming the outer side of said chamber, the head being displ ace'able to open the chamber, and provided with a sight opening having a transparent filling in which a pill outlet is formed, a rotary pill feeder j ournaled in the chamber under said filling, and having a circular series of pill pockets, and a plunger movable in the casing and adapted to into the pill feeder and outlet.

5. A pill injectorcomprising a casing having a pill chamber at one end, and an internal plunger guide, the outer side of the chamber being provided with a pill outlet coinciding with said guide, t rotary ratchettoothed pill feeder in the chamber, a spring pressed push piece movable in a guide in said block and provided with a pawl engaged with the periphery of the feeder, and with a detent adapted to engage and release the plunger.

be projected 6. A pill injector comprising a casing having a pill chamber at one end and an internal plunger guide, the outer side of the chamber being provided with a pill outlet coinciding with said guide, a rotary ratchettoothed pill feeder in the chamber, a spring pressed plunger movable in said guide, and a spring pressed push piece movable in a I guide in said block and provided with a pawl engaged with the periphery of the feeder, and with an arm formed as a detent adapted to engage and release the plunger, the block being provided with a guide which not only permits endwise movements of the detent arm, but also supports the same against the pressure of the plunger spring.

7. A pill injector comprising 'a casing having a fixed block or partition forming the inner side of a pill chamber, and a movable head forming the outer side of said chamber, and provided with a pill outlet, a pill feeder movable in said chamber, a plunger movable in the casing and adapted to e projected into the pill feeder and outlet, the cap being displaceable to expose the feeder, an arm hinged to the cap and having a notched bolt adapted to enter an orifice in the said block, and a detent movable in the block to engage the notched bolt.

In testimony whereof I have affixed my signature, in presence of two witnesses.

JOHN KOZMOUSKY.

' lVitnesses D. L. CLARK, P. W. Pnzzn'r'rr.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). C. 

